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<h1 class="topictitle1">手动执行备份</h1>
<div><p>当您需要立即执行一次备份任务时，可以通过手动备份实现。</p>
<div class="section"><h4 class="sectiontitle">背景信息</h4><ul><li>手动备份产生的副本保留时长按照SLA中的定义进行保留。<p>如果手动备份时选择的保护策略未在SLA中定义，则产生的备份副本保留时长为永久保留。如SLA中未定义增量备份，而手动备份时选择的是增量备份，则本次手动增量备份产生的副本保留时长为永久保留。</p>
</li><li>如果SLA中定义了复制策略或归档策略，则执行手动备份时，系统会按照SLA的定义执行一次复制或归档。</li><li>手动备份时，SLA中定义的参数（<span class="uicontrol">“<span>失败后自动重试</span>”</span>除外），如<span class="uicontrol">“<span>限速策略</span>”</span>会应用到手动备份任务中。</li></ul>
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<div class="section"><h4 class="sectiontitle">操作步骤</h4><ol><li><span>选择<span class="uicontrol" id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001792342950_zh-cn_topic_0000001839142377_uicontrol865195012392">“<span id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001792342950_zh-cn_topic_0000001839142377_text4651950123919">保护</span> &gt; 大数据 &gt; GaussDB(DWS)”</span>。</span></li></ol><ol start="2"><li><span>选择<span class="uicontrol" id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001839222005_uicontrol14705224101119">“<span id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001839222005_text1792112754418">集群</span>”</span>、<span class="uicontrol" id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001839222005_zh-cn_topic_0000001397042241_uicontrol7186131513484">“<span id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001839222005_text8331393414">Schema集</span>”</span>、<span class="uicontrol" id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001839222005_zh-cn_topic_0000001346641948_uicontrol10151651133510">“<span id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001839222005_text32517382346">表集</span>”</span>页签。</span></li><li><span>在需要备份的集群、Schema集或表集所在行单击<span class="uicontrol">“<span>更多</span> &gt; <span>手动备份</span>”</span>。</span></li><li><span>设置手动备份产生的副本名称。</span><p><p>如果您不设置，系统默认设置副本名称为：backup_时间戳。</p>
</p></li><li><span>设置保护策略。</span><p><ul><li>对于集群，可以选择<span class="uicontrol">“<span>全量备份</span>”</span>、<span class="uicontrol">“<span>增量备份</span>”</span>或<span class="uicontrol">“<span>差异备份</span>”</span>。</li><li>对于表集，仅支持<span class="uicontrol">“<span>全量备份</span>”</span>。</li><li>对于Schema集，仅支持<span class="uicontrol">“<span>全量备份</span>”</span>。对于GaussDB(DWS) 8.2.1及以上版本，还支持Schema集的<span class="uicontrol">“<span>增量备份</span>”</span>。</li></ul>
</p></li><li><span>单击<span class="uicontrol">“<span>确定</span>”</span>。</span><p><div class="note"><img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span><div class="notebody"><p id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001792503838_p870125314544">支持选择多个资源批量进行手动备份。勾选多个资源，在页面左上角选择<span class="uicontrol" id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001792503838_uicontrol14182155715711">“<span id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001792503838_text662114113158">更多</span> &gt; <span id="ZH-CN_TOPIC_0000001792502734__zh-cn_topic_0000001792503838_text1068159191519">手动备份</span>”</span>。</p>
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<div class="parentlink"><strong>父主题：</strong> <a href="zh-cn_topic_0000001839142153.html">步骤7：执行备份</a></div>
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